@misc{philosophie+der+arithmetik+psychologische+und+logische+untersuchungen+bd+1,
    author = {Husserl, E. G.},
    title = {Philosophie der Arithmetik : psychologische und logische Untersuchungen. Bd. 1},
    address = {Halle-Saale},
    publisher = {C. E. M. Pfeffer (Robert Stricker)},
    date = {1891}
}